class Test {
  constructor(ex){
    this.value = undefined;
    const fn1 = (value) =>{
      console.log(value);
    }
    const fn2 = (value) =>{
      console.log(value+ '111');
    }
    ex(fn1,fn2,console.log('i am exe'))
  }
  fun3(){
    console.log('object');
  }
}

let a = new Test((fn1,fn2)=>{
  fn1()
  fn2()
});
a.fun3();
